Title :
2-D Terahertz Metallic Photonic Crystals in Parallel-Plate Waveguides
Author :
Zhao, Yuguang ; Grischkowsky, Daniel R.
Author_Institution :
Sch. of Electr. & Comput. Eng., Oklahoma State Univ., Stillwater, OK
fDate :
4/1/2007 12:00:00 AM
Abstract :
2-D metallic photonic crystals without defects, with point defects, and with a Fabry-Perot (F-P) defect are characterized by terahertz time-domain spectroscopy. The metal parallel-plate waveguide (PPWG) with single TEM-mode propagation is used as a tool to simulate 2-D photonic crystals in free space. The 2-D metallic photonic-crystal structures were fabricated by coating Au on an SU-8 polymer cylinder array. Wide terahertz bandgaps were observed in the photonic crystals within the PPWG. The experimental measurements have excellent agreement to 2-D photonic-crystal theory without defects. Defect modes are observed in the samples with defects and show the F-P defect has a strong localization effect
Keywords :
parallel plate waveguides; photonic crystals; point defects; submillimetre wave spectra; time-domain analysis; 2D terahertz metallic photonic crystals; Fabry-Perot defect; SU-8 polymer cylinder array; TEM-mode propagation; defect modes; localization effect; metal parallel-plate waveguide; parallel-plate waveguides; point defects; submillimeter-wave spectroscopy; terahertz time-domain spectroscopy; wide terahertz bandgaps; Dielectrics; Engine cylinders; Frequency; Lattices; Microwave antenna arrays; Optical waveguides; Photonic band gap; Photonic crystals; Spectroscopy; Time domain analysis; Photonic crystals; submillimeter-wave spectroscopy; terahertz; waveguides;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2007.892798
